Improvement in outtee-heads foe wood-moulding machines



,stent ffirr.

DAVID OUMMING, JR., OF NEW YORKQN. Y., ASSIGNOR TO HIMSELF AND STEPHENW. SMITH, OF THE SAME- PLAGE.

Leners Paten: No. 63,707, dans April 9,1867.

'IMPROVEMENT IN GUTTERHEADS FOB. WOOD-MOULDING MACHINES.

i alla tttmlt man it iu tipa lettera tant rmt making ptn nt tige :una

TO ALL WHOM IT MAY CONCERNr l Be it known that LADA'VrDI GUMMING, Jr.,of New York, in the county and State of New York, have invented a newand usefuliMachine for Moulding and Shaping Wood; and I do herebydeclare that the follow! ing is a full, clear, and exact description-oi`the construction and operation of the same, reference being-had to theannexed drawings, making a part of this specification, in Which- Figure1 is a perspective view.

Figure 2, a horizontal section; and

Figur/es 3 and 4, vertical sections of a portion of the table, showingthe cutter-head in diiierent positions.

The same letters refer to corresponding parts in the different figures,in whichl 4A is-the framev of thej machine; B the tahleC an uprightspindle, having bearings in the frame, and suspended by the swivel D,lever E, and spring k, and rotated in the direction of they arrow by abelt on the pulley G. The spindle isdrawn down by the rod H attached tothe lever. To the lower end oi' the'spindle is attached-,the cutter-headK, with the cutters L L. M N are guides, attached to the cutter-head,one above and the other below the cutters. The shank of the cutter-headis continued below the lower guide, and enters the bearing O in thetable. The bearing O is countersunk to a depth suiiicient to allow thelower guide to be depressed below the surface of the table. Pis thepattern or shape of the work, to which is attached theI piece' of wood,W, to be shaped.

In operating, the rod is drawn down and hooked to the pin K, whichbrings the lower. guide a suitable height above theA table, as seen iniig. 3. The pattern with the wood attached to it is laid on the tableand pressed against thelowerguide, when all the-superfluous Wood is cutoii that can be cut one way ot' the grain. The rod is then drawn downand hooked to the pin S, which depresses the lower guide into thecounter-sink below the surface of the table, as seen in iig. 4. Thepattern, with thewood still attached to it, is turned upside down, withthe wood resting on the table, and the pattern pressed against-the upperguide, when the remainder of the superfluous wood can be out oi` withthe cutter still rotating in thc same direction.

I am aware thatwood has been planed and carved to a pattern, a rotarycutter beingv employed with a guide running against the pattern, so asto determine Vthe shape or form of the article planefl. These guideshave in some instances been both above and below the cutters, so thatthe pattern might b e on the underpor onthe upper surface et' the woodto be planed. These devices, however, were not adapted to planing withthe grain of the wood by the 4simple inversionoi` the pattern and wood,because if the cutter had been fitted to run at lthe level of the bed,(the guide taking:r the pattern above the wood,) when saidpattern andwood were turned over the pattern would come into contact withthecutter. By my improvement this last-named diieulty is'obviated bylowering the bed or raising the cutter with facility, so that theplaning can be effected continu-v ously by raising or lowering thecutter relatively to the bed, when the pattern and wood are turned overso as to use the guide above or below the cutters interchangeably,according to the position of the pattern.` Ido not, therefore, claim arotary cutter held between two heads, which alsoV form guides; neitherdo I claim the guide and pattern acting below the wood to be planed, northe guide and pattern acting above the wood to be planed; but what Iclaim, and desire to secure by Letters Patent, is i p A cutter-headformed with a guideboth above and below the cutter, in combination withmechanism for raising or lowering the cutter relatively with the bed, sothat the pattern and wood to be planed can be laid either side upwardson the'bed, (according to the direction of the grain of the wood inplaning) and the cutter and guides be brought to their proper placesrelatively to the` wood and th'e pattern, as set forth.

' DAVID CUMMING, Jn.

Witnesses Y Gao. Lnnrno'ron, CIIAs'. MoN-Tacna.

